Networking#2 - Numbering systems, Standards and the OSI model.

We need to build a solid base for all the stuff we're going to learn afterwards, so this will be a bit like building the foundations for a skyscraper.

1.- Numbering systems:

- Define the following numbering systems:

 - binary
 - octal
 - decimal
 - hexadecimal

Why does a computer use binary?
Internally, does a computer use anything but binary?
Why do we use decimal and hexadecimal numbers then? how are they useful?
Incidentally, why do Ram modules follow an increment in space like this: 2Gb-4GB-8Gb-16Gb-32Gbmb, processors also go  8bit, 16bit- 32bit-64bit... why is this?

We will see a bit later why this is important and relevant.

2.- Standards, RFCs and the IETF:

- What is a Standard? (hint: read RFC 2026 and )
- Who are the IETF ? What do they do?
- What is an RFC? how are RFCs relevant¿?
- What is the IRTF?

How have the IETF and IRTF had an impact on how the internet works?

3.- OSI model:

(This part is hard theory, so you're just going to have to suck it up and learn it)

- What is the OSI model?

- What are "layers"?

- How do layers interact with eachother?

- What is a protocol?
- What is a "protocol stack"? (I call it the protocol Lasagna)
- What are the different layers? what does each layer do?

(there are definitely more questions to be asked, but in this case you must simply "know" the OSI model, because we will use it later to correlate it to the Ethernet + TCP/IP stack of protocols.

4.- Networking history

Legacy

- Token ring /  Arbitrated Loop

- BNC network connectors

- IPX protocol
- Novell networks
- Nortel

Read:
https://visual.ly/community/infographic/technology/brief-history-computer-network-technology